{"cve":"CVE-2026-23210","nvd":{"published":"2026-02-14T17:15:58.910","modified":"2026-10-19T19:17:42.123","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nice: Fix PTP NULL pointer dereference during VSI rebuild\n\nFix race condition where PTP periodic work runs while VSI is being\nrebuilt, accessing NULL vsi->rx_rings.\n\nThe sequence was:\n1. ice_ptp_prepare_for_reset() cancels PTP work\n2. ice_ptp_rebuild() immediately queues PTP work\n3. VSI rebuild happens AFTER ice_ptp_rebuild()\n4. PTP work runs and accesses NULL vsi->rx_rings\n\nFix: Keep PTP work cancelled during rebuild, only queue it after\nVSI rebuild completes in ice_rebuild().\n\nAdded ice_ptp_queue_work() helper function to encapsulate the logic\nfor queuing PTP work, ensuring it's only queued when PTP is supported\nand the state is ICE_PTP_READY.\n\nError log:\n[  121.392544] ice 0000:60:00.1: PTP reset successful\n[  121.392692] BUG: kernel NULL pointer dereference, address: 0000000000000000\n[  121.392712] #PF: supervisor read access in kernel mode\n[  121.392720] #PF: error_code(0x0000) - not-present page\n[  121.392727] PGD 0\n[  121.392734] Oops: Oops: 0000 [#1] SMP NOPTI\n[  121.392746] CPU: 8 UID: 0 PID: 1005 Comm: ice-ptp-0000:60 Tainted: G S                  6.19.0-rc6+ #4 PREEMPT(voluntary)\n[  121.392761] Tainted: [S]=CPU_OUT_OF_SPEC\n[  121.392773] RIP: 0010:ice_ptp_update_cached_phctime+0xbf/0x150 [ice]\n[  121.393042] Call Trace:\n[  121.393047]  <TASK>\n[  121.393055]  ice_ptp_periodic_work+0x69/0x180 [ice]\n[  121.393202]  kthread_worker_fn+0xa2/0x260\n[  121.393216]  ? __pfx_ice_ptp_periodic_work+0x10/0x10 [ice]\n[  121.393359]  ? __pfx_kthread_worker_fn+0x10/0x10\n[  121.393371]  kthread+0x10d/0x230\n[  121.393382]  ? __pfx_kthread+0x10/0x10\n[  121.393393]  ret_from_fork+0x273/0x2b0\n[  121.393407]  ? __pfx_kthread+0x10/0x10\n[  121.393417]  ret_from_fork_asm+0x1a/0x30\n[  121.393432]  </TASK>","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","score":4.7},"cwes":["CWE-476","CWE-362"],"references":["https://git.kernel.org/stable/c/7565d4df66b6619b50dc36618d8b8f1787d77e19","https://git.kernel.org/stable/c/ba0c7fff6616025a7d3a9e887e7ce16b06dc34b9","https://git.kernel.org/stable/c/fc6f36eaaedcf4b81af6fe1a568f018ffd530660"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-21T03:43:09.190223697+00:00"},"epss":{"cve":"CVE-2026-23210","score":0.00097,"percentile":0.00737,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}